Trusted Sources

Google Knowledge Graph: Entity isReference Domains

Dataset: 62,202 isReference domains | entities

Proprietary analysis of Google's entity validation patterns across the Knowledge Graph.

The Google leak in May 2024 confirmed that Google explicitly associates people with their profile pages (isReference) and articles they have written (isAuthor).

⚠️ You Can't Use Just ANY Domain!

Out of 1,738,093 domains we monitor, only 62,202 qualify as isReference domains.

3.65%

Only 3.65% of domains earn isReference status from Google. Domain selection is critical.

Key concepts:

Wikipedia is NOT Required (or even your best bet)

Wikipedia: 6 million entities
Kalicube Pro: 71 million entities
Knowledge Graph: 50 billion entities

0.012%

Wikipedia covers only 0.012% of the Knowledge Graph. If your entity isn't in that 0.012%, you need to build a Knowledge Panel with ~30 isReference url instead.

📊 Kalicube's Entity Validation Dataset

1,738,093
Domains Checked Regularly
62,202
isReference Domains
3.58% qualify
23,295,240
URLs Monitored
76,481,082
Entities Tracked

💡 Even Small Niche Domains Have isReference Authority

Examples from our dataset (December 2025):

kalicube.com 21 entities
searchengineland.com 11 entities
jasonbarnard.com 86 entities
searchenginejournal.com 270 entities
entrepreneur.com 1,292 entities
forbes.com 2,823 entities

Your niche-specific domains may have similar authority in your category.

Top 100 isReference Domains for All Entity Types

Rank Domain Entity Count
1 wikipedia.org 422,592
2 instagram.com 141,121
3 linkedin.com 106,933
4 x.com 74,800
5 facebook.com 50,663
6 legacy.com 44,073
7 namu.wiki 35,979
8 google.com 34,223
9 youtube.com 31,112
10 britannica.com 24,586
11 reddit.com 19,751
12 dictionary.com 19,351
13 crunchbase.com 16,678
14 amazon.com 15,736
15 fandom.com 13,321
16 microsoft.com 10,544
17 wiktionary.org 9,935
18 letterboxd.com 9,306
19 tiktok.com 9,020
20 rottentomatoes.com 7,739
21 apple.com 7,686
22 yahoo.com 6,514
23 justwatch.com 6,006
24 cambridge.org 5,839
25 imdb.com 5,676
26 shopee.co.id 5,410
27 epicgames.com 4,862
28 hbomax.com 4,812
29 time.is 4,790
30 quora.com 4,755
31 wikiwand.com 4,683
32 espn.com 4,656
33 billboard.com 4,459
34 genius.com 4,363
35 indeed.com 4,305
36 shopee.ph 4,280
37 history.com 4,063
38 github.com 3,981
39 bbc.com 3,885
40 nhl.com 3,848
41 spotify.com 3,845
42 dictionary.net 3,849
43 fifa.com 3,773
44 pornhub.com 3,769
45 independent.co.uk 3,642
46 theguardian.com 3,629
47 forbes.com 3,585
48 vocabulary.com 3,531
49 google.co.il 3,358
50 bing.com 3,331
51 temu.com 3,310
52 reuters.com 3,162
53 deel.com 3,054
54 xhamster.com 2,991
55 eo-paris.fr 2,915
56 bbc.co.uk 2,850
57 amazon.co.uk 2,838
58 nfl.com 2,837
59 inc.com 2,740
60 thesaurus.com 2,732
61 gov.uk 2,675
62 uk.com 2,672
63 goodreads.com 2,647
64 nintendo.com 2,602
65 merriam-webster.com 2,601
66 radiofrance.fr 2,571
67 trustpilot.com 2,572
68 nih.gov 2,549
69 rateyourmusic.com 2,531
70 netflix.com 2,524
71 house.gov 2,522
72 televisionacademy.com 2,492
73 search.google 2,451
74 loc.gov 2,434
75 ca.gov 2,373
76 bloomberg.com 2,342
77 entrepreneur.com 2,346
78 aliexpress.com 2,340
79 playstation.com 2,327
80 amazon.fr 2,316
81 zhihu.com 2,302
82 the-independent.com 2,305
83 stanford.edu 2,261
84 grammy.com 2,250
85 upenn.edu 2,244
86 researchgate.net 2,243
87 ebay.com 2,226
88 pinterest.com 2,208
89 gog.com 2,192
90 one-line.com 2,193
91 soundcloud.com 2,170
92 watch.plex.tv 2,125
93 metacritic.com 2,125
94 nba.com 2,096
95 nature.com 2,097
96 delta.com 2,094
97 itv.com 2,079
98 google.com.br 2,069
99 libri.de 2,055
100 premierleague.com 2,033
101+ 62,102 additional niche-specific domains in full dataset covering 75,125,751 additional entities

Why This Data Matters

Google validates entity information through patterns of corroborating mentions across trusted domains. This list shows where Google recognizes all entity types - but here's the catch: entity authority is extremely niche-specific.

Entity Validation at Scale

Google's Knowledge Graph requires consistent entity recognition across validated domains.

  • Only 3.65% of domains (62202 out of 1738093) qualify as isReference
  • Brands typically need ~30 entity-validated url for a stable Knowledge Panel
  • Each niche has unique entity authority patterns
  • Generic "authority lists" miss 95%+ of niche-specific opportunities

⚠️ This Free List is Intentionally Limited

The top 100 domains shown above are dominated by massive generalist sites. For 99% of brands, the real opportunities lie in the niche-specific domains that only appear in our full platform dataset.

Recommended Reading:

🔐 Find YOUR Niche-Specific isReference Domains

We monitor 23M+ URLs across 1.7M domains to identify the exclusive 3.65% that qualify as isReference domains for 72M+ entities. The Kalicube Pro platform maps your competitive landscape and identifies your niche-specific opportunities in 15 minutes.

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